Update: A Google spokesperson writes that Google hasn’t purchased and is not testing any Microdrones: “This was a purchase by a Google executive with an interest in robotics for personal use.”

If you felt that Google Street View violated your privacy, wait until you’ve got one of these hovering over your back porch.

The German business magazine Wirtschaftswoche reported[2] over the weekend that Microdrones[3], a company based in the city of Siegen, Germany, has sold at least one of its flying surveillance robots to the search giant for testing. Sven Juerss, Microdrones’ chief executive, told the magazine that the radio-controlled devices–four rotor helicopters about a meter across–could be helpful in Google’s mapping projects, and that he think there’s a good chance Google will buy more of the airborne bots.